feat: remove InsertChar action and inline character handling; streamline input processing and autocomplete triggers

src/app/runtime/actions/mod.rs

@@ -40,7 +40,6 @@ pub enum Action {
     ForceQuit,
     SwitchMode(ModeKind),
     SubmitInput(String),
-    InsertChar(char),
     DeleteChar,
     DeleteCharRight,
     CursorLeft,
@@ -136,10 +135,6 @@ pub fn apply_action(state: &mut AppStateRest, action: Action) {
             spawn_turn(state);
             state.dirty = true;
         }
-        Action::InsertChar(c) => {
-            state.input.insert(c);
-            state.dirty = true;
-        }
         Action::DeleteChar => {
             state.input.delete_left();
             state.dirty = true;